I have very little nausea during my whole pregnancy but if I wait too long when I'm hungry it comes back! Try to notice if there is a trigger to it. Odor, hunger or even crowded place make me nauseous sometimes.
Im giessing its normal, i used to have nausea and vomit all the time until i was about 15 weeks and it stopped, but now lately ive been feeling nauseas again and im 36 weeks